Composition change resolution during export.

[Joelmatador]

Hi,
I'm trying to render a video with a weird ratio. The media is a screen that goes all around an ice ring. The resolution is 25024 x 80px. For technical reasons with the live software, I need to separate the video in 2. So I need to make a 12512 x 80px video.
When I try to export the video via media encoder it force the resolution to 4096 x 26 px. I try to put back the right resolution in media encoder preset, it register my input but the final result after render is not 12512 x 80px but 4096 x 26 px.
As I was typing I found a work around using only the after effect render. But I have multiple screens to make so I would be better off using ME.
Can someone explain to me why media encoder does this?

[Mylenium]

Limitations in OpenGL/ OpenCL, CUDA etc. due to how math works on GPUs (power of two values preferred, symmetrical pipelines etc.) most likely. If this isn't hard-set in AME itself you could try to switch to software-only mode and it may unlock the values, but otherwise you're really out of luck. Adobe has always adhered to standardized specs pretty closely and weird out-of-spec formats like yours are always troublesome. You may need to resort to other products outside the Adobe world for final encoding after you've rendered your clips directly from AE to an unconstrained format.

Mylenium

[Rick Gerard]

When you produce projects for specialized video display systems, following the manufacturer's recommendations is critical. I have often had to render an image sequence or uncompressed video at odd sizes, then use specialized encoding software to generate the appropriate media for playback. Check with the folks that commissioned the project and find the specifications. They are published somewhere. Follow those, and you should have no problems.